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Finding the Fourth Proportional to 587,781.69, 811,147.44 and 342,759.63

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Solution

The fourth proportional to 587,781.69, 811,147.44 and 342,759.63 is: 473,013.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,781.69 : 811,147.44 = 342,759.63 : x
  2. Step 2: Convert to fraction form
    587,781.69/811,147.44 = 342,759.63/x
  3. Step 3: Cross multiply
    587,781.69x = 811,147.44 × 342,759.63
  4. Step 4: Simplify right side
    587,781.69x = 278,028,596,409.85
  5. Step 5: Solve for x
    x = 278,028,596,409.85/587,781.69
  6. Step 6: Final answer
    x = 473,013.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.